Bringing my 1 1/2 year old to my doctor appointment.

Melisa
So typically my mom would watch my little guy so I can go to my doctors appointment. I am 30 weeks and have quick appointments every 2 weeks. Leaving a urine sample, weight and blood pressure check. We hear baby heart beat and measure my stomach. Just found out my mom is sick and won't be able to watch my little guy for my appointment tomorrow. Do you think it is ok to bring him with to my appointment or do I cancel? Have any of you ladies had to bring a little one with? Should I call and check with doctors office? Any advice would be greatly appreciated. 
Update: thank you for all the responses. I took him with brought a snack a favorite book and had a kids show ready on my phone just in case. He did great was more amazed with everything going on around him. No problems thanks for the advice and support.